32120-95301 Suzuki Coil, lighting

Table 1
J1939 Code and Description CDL Code and Description Comments
3826-15
Aftertreatment #1 DEF Average Consumption : High - least severe (1) E1740 (1)
Low Aftertreatment #1 DEF Average Consumption The sock filters on the Diesel Exhaust Fluid (DEF) headers in the DEF tank are plugged with debris and all the system filters need replaced.
4334-17
Aftertreatment #1 DEF #1 Pressure (absolute) : Low - least severe (1) E931 (1)
Low Aftertreatment #1 DEF Pressure #1 The DEF system pressure dropped below the acceptable threshold during dosing on pump #1.
5392-31
Aftertreatment #1 DEF Dosing Unit #1 Loss of Prime E1370 (1)
Aftertreatment #1 DEF Dosing Unit #1 Loss of Prime The DEF system pressure was not achieved during priming on pump #1.
7459-17
Aftertreatment #1 DEF Doser #2 Absolute Pressure : Low - least severe (1) E1706 (1)
Low Aftertreatment #1 DEF Pressure #2 The DEF system pressure dropped below the acceptable threshold during dosing on pump #2.
7541-31
Aftertreatment #1 DEF Dosing Unit #2 Loss of Prime E1666 (1)
Aftertreatment #1 DEF Dosing Unit #2 Loss of Prime The DEF system pressure was not achieved during priming on pump #2.
Table 2
Associated Codes
J1939 Code CDL Code Troubleshooting Procedure
1761-1 E954 (3) Troubleshooting, "DEF Tank Level Is Low"
1761-17 E954 (1) Troubleshooting, "DEF Tank Level Is Low"
1761-18 E954 (2) Troubleshooting, "DEF Tank Level Is Low"
7598-5 5024-5 Troubleshooting, "Solenoid Valve - Test (Aftertreatment)"
7598-6 5024-6 Troubleshooting, "Solenoid Valve - Test (Aftertreatment)"
7599-5 5025-5 Troubleshooting, "Solenoid Valve - Test (Aftertreatment)"
7599-6 5025-6 Troubleshooting, "Solenoid Valve - Test (Aftertreatment)"
Table 3
Required Tools
Part Number Part Name Qty
441-0451 Tool Gp 1 Probable Causes
Codes
Debris
DEF filters
Connectors and Wiring
Leaks
DEF quality
DEF lines
Voltage
DEF pump
Backflow valveRecommended Actions
Table 4
Troubleshooting Test Steps Values Results
1. Check for Codes
A. Connect Cat® Electronic Technician (ET) to the service tool connector.
B. Look for active codes that are associated with the system for the event code.
Codes
Result: An associated code is active.
Repair: Troubleshoot the associated code before continuing with this test.
Result: An E1740 or 3826 code is active or logged.
Proceed to Test Step 2.
Result: An E931, E1370, E1666, E1706, 4334, 5392, 7459, or 7541 code is active or logged.
Proceed to Test Step 3.
Illustration 1 g06026959
(1) DEF header
(2) Sock filter
(3) DEF header filter
Illustration 2 g06027016
(4) DEF suction line filter fitting
(5) DEF pump
(6) DEF pump filter cap
Table 5
Troubleshooting Test Steps Values Results
2. Inspect the Diesel Exhaust Fluid (DEF) Tank Vent Line, Breather, and Fill Cap for Debris
Debris
Result: The DEF vent line, breather, and fill cap show no signs of debris accumulation.
Proceed to Test Step 3.
Result: The DEF vent line, breather, and fill cap show signs of debris accumulation.
Repair: Remove and clean the contaminated components with warm water.
Reinstall the components. Proceed to Test Step 3.
3. Replace the Filters and Flush the DEF Tank
A. Turn the keyswitch to the OFF position.
B. Measure the DEF quality. Refer to Testing and Adjusting, "Diesel Exhaust Fluid Quality - Test" for additional information.
C. Remove the DEF headers from the DEF tank. Refer to the Disassembly and Assembly manual for additional information.
D. Flush the DEF tank. Refer to Testing and Adjusting, "Diesel Exhaust Fluid Tank - Flush" for additional information.
E. Replace the DEF header filter and DEF header sock filter on each of the DEF headers. Refer to the Disassembly and Assembly manual for additional information.
F. Replace the DEF pump suction line filter fitting and DEF pump filter on each of the DEF pumps. Refer to the Disassembly and Assembly manual for additional information.
DEF Filters
Result: The DEF tank was flushed and the filters were replaced.
If the DEF was contaminated, contact the Dealer Solutions Network (DSN) for further information.
Proceed to Test Step 14.
4. Inspect the Electrical Connectors and the Wiring
A. Turn the keyswitch to the OFF position.
B. Inspect the electrical connections to each DEF tank header. Refer to Troubleshooting, "Electrical Connectors - Inspect" for additional information.
C. Inspect the connections for corrosion or loose wires.
Connectors and Wiring